Sheet-metal roofing.



EDWIN IR.. PROBERT, OF COVINGTON, KENTUCKY, ASSIGNOR T0 THE MOESCHL- EDWARDS CORRUGATING COMPANY, OF COVINGTON, KENTUCKY, A CORPO- RATION OF KENTUCKY.

SHEET-METAL ROOFIN'G.

Specification of Letters Patent.

Patented June 2e, 1915.

To all whom, it may concern:

Be it known that I, EDWIN R. PROBERT, a citizen of the United States of America, and a resident of Covington, in the county of Kenton and State of Kentucky, have invented a certain new and useful Improvement in vSheet-Metal Roofing, of which the following is a Specification.

This invention relates to joints for sheetmetal roofing and especially to the particular form or type seen in prior Letters-Patent No. 1,123,921 granted to me January 5, 1915,

in which a lower-crimp having a concaved or guttered apex is overlapped by an oppositely-sloping crimp and the fastening-nails are driven through the apex of the lapped joint into the sheathing beneath.

The object of the present invention is to preferably provide within its scope firm and rigid supports for the sloped capping or overlapping member of the joint that serve to stii'en and strengthen the joint and will not give way under the force of the blows required in capping and in nailing thejoint, nor the 'weight of those walking on the roof when in use.

The device is capable of considerable modification, as will Ifully appear in the drawings forming apart hereof, and in the description of the details that hereinafter follow.

In the accompanying sheet of drawings, that illustrate the device in somewhat exaggerated f orm, Figure 1 is an end elevation of the preferred form of roof-joint embodying my invention herein and somewhat ornamental in appearance or effect: Fig. 2, a similar view, but of a modified, plain form; Fig. 3, a similar view, but of still another modification that is only partly ornamental; and-Fig. 4,' a view similar to Fig. 2 but of a modification whose capping-member has a true, pointed apex and is not erna# mental, a fastening-nail being shown in po sition driven through the capped-joint into the sectioned sheathing below.

1 indicates a roofing-sheet and- 2' another contiguous roofing-sheet, both to be laid and joined together in the usual method of covering suitable sheathing.- c

3 indicates an .upright shallow bead or corrugation running parallel to the longitudinal lapped-edge of sheet 1; 4, ya contiguous, parallel corrugation somewhat higher than the one 3; 5, a horizontal foot or base extending from corrugation 4; 6, a slightly slanting limb or upright-member leading from the base 5 having a companion oppositely-slanting limb or upright-member 7, both limbs 6 and 7 being straight ones and duly spaced apart at their upper convergent ends by means o a downwardlycurved or guttered ligament or truncated apex-member 8; and 9, a foot orbase which is a companion to the base 5 and extends laterally from the lower edge of the limb or upright-member 7, with an upwardly and outwardly sloping flange-member 10 along its outer edge.

11 indicates an upright shallow bead or corrugation running parallel to the overlapping longitudinal edge of the sheet -2 that is joined to sheet 1, such bead 11 being a companion onesto the bead 3 in the sheet 1 and coinciding with it in purpose andappearance yfor harmonious effect both mechanically and ornamentally.

12 is Va sloping member extending upwardly from the outer lower edge of the bead 11 and having at its upper edge a bead 13 that has at its outer lower edge a downwardly-curved or channel member 14, the bead 13 and channel-member 14 forming a slantino' S-formation that extends into another 1szloping .vertical member 15 whose upper edge, in turn, has a horizontal straight or Hat apex connecting-member 16 to unite it with a vertical member 17, a companion to the sloping member 12 but oppositely sloping at the same angle. A slanting S- formation is'made along the lower edge of the member 17 and is composed of a downwardly-curved or channel member 18' and a bead v19, similar to the S-formation along the lower edge of the vertical member 15 and the outer` edge of the bead 1 9 extends downwardly andV yslopes,outwardly to formv a fender 20 to correspond to the like formation or memfter' 12 along the bead-formation 11. Thus the parts or elements are made in like or corresponding partsthat impart a harmonious and somewhat ornamental eect tothe joint when it is laid, with the members 12, 1e, 14,15, 16, 17, 18, 19 and 2o duly overlapping or overtopping the members 10, 9, 37, 8, 6, 5 and 4, and providing ample Ventilating and drainage chambers or passages 21 and 22 beneath the two sloping S-shape formations in the cappin or upper4 joint member. The downwar y curved apex-member 8 of the capped or lower jointmember provides an upper Ventilatingchamber beneath the capping joint-member. In the use of my preferred form of joint V seen in Fig. 1 any possible seepage beneath the outer fender 20 is shunted so as to drop l vfrom the underside of the channel-member 18 into the bottom of the first large drainchamber 21, but should it be at all possible for any seepage whatever to get to the top of the sloping upright-member 6 it will pass oil'l along the guttered apex-member 8, and

^ should it be even further possible for any drain-chamber 21 are, of coursez extremely remote, but the subsequent barriers impart or aiford still greater security and etiiciency in the joint against leakage into the sheathing beneath.

` The pair of upright-members 6 and 7 combine to form a stiff and rigid support for the upper or capping-member of the joint and certainly give great strength to the joint as well as to form walls or partitions that result in the ample Ventilating and drain chambers 21 and 22, and they are made slightly sloping or spreading away from 'each other downwardly so as torfacilitate the manufacture of the joint and adapt it to close packing or nesting with others in piles or stacks, free to be -easily parted when required. 4

The nails used are of any ordinary form,

as seen at 23-in Fig. 4, and the usual soft' vwashers 24 accompany, beneath the heads thereof, to .prevent leakage.

The various elements vof structure thust far described are of such form as to ada t the-fjointtofbe economically-andeasily ma e-- without much bending or shaping of the metal and with materially :fewerv dies and less die-work. There is no material increase,

if any. inLthe .use of material in the formation of this joint and it maybe made either ornamental to a greater or less extent as in Figs. 1 and'3,or perfectly plain, as in the remaining views.

It will be readily seen that there are but few lapped or connecting surfaces of any degree whateverin the joint, thereby reducing the chances of seepage or leakage from capillary attraction to a minimum.

The bead or corrugation 3 serves as a material guard or barrier to the entrance of vwater by wind or otherwise beneath the lower edge of the fender-end 20 of the capping-member of the joint that is of importance and advantageous.

In Fig. 2, I have shown a modied form that omits the beads 3, 11, 13 and 19 and the channels 14 and 18, thus providing an inverted `V-shaped lapping-member having continuous stra-i ht sides 25 and 26, and a fiat or truncate apex, the latter the same however, as in Fig. 1. The drain-chambers 21 and 22 of this. form are certainly ample and most effective against seepage.

In Fig. 3, I have shown the same structure as in Fig. 1 excepting that the slanting S- shape formations in the sloping sides of the upper or lapping member of the joint are omitted and said sloping-sides 25 and 26 made plain, as in Fig. 2.

In Fig. 4, I have shown a plain inverted V-shape capping-member with straight sloping sides 25 and 26, the same as in Fig. 2,

and without the beads 3, 11 and 19 of Fig.'

1, but it has a true, pointed apex, and the capped-member is the same as in Fig. 2. The chamber within the top of the joint is of larger area in this form than in the other truncated forms, and it requires' less material and die-work to produce this form of joint too, but the seepage-barriers are not so numerous and the effect not quite so great and satisfactory asin the other forms.

It will be observed, especially in Fig. 1, that the various elements of `both the apping and lapped members of the j oint herein are made in corresponding pairs, including thereunder the upright limbs 6 and 7; the feet or bases 5 and 9; the flange 10 and the upright bead or corrugation 4; the beads or corrugations 3 and 11; the upper slanting-members 15 and 17; the beads 13 and 19;

l the channels 14 and 18; and the lower slanting-members 12 and 20, all of which are easily made and assembled for packing or use, and a most symmetrical effect follows when the joint is laid.

I claim:

1. A lap-joint for sheet-metal roofing comprisinga lower or lapped member havingl a'pair-of corresponding, slightly spread.- ing limbs or uprghts, a concaved or guttered apex-ligament connecting the upper edges of said limbs, lateral feet or bases projecting from said'limbs, an outwardly-Haring flange extended upwardly from one of said feet, an inverted V-shape crimp projecting from the other of said feet and form* ing part of one of the sheets to be joined, and an yupper or lappin member having spreading or outwardly-s oping sides whose meeting point or apex vertically alines with said guttered apex-ligament ofthe lower or lapped member and whose said sloping-sides cover the lower-member so that a large velitilating and drain chamber or passage is provided between each of them and the adion jacent limbs or uprights of the lappedmember.

2. A lap-joint for sheet-metal roofmg comprising a lower or lapped member having a pair of corresponding, slightly spreading limbs or uprights, a concaved or guttered apex-ligament connecting the upper edges of said limbs, lateral feet or bases projecting from said limbs, an outwardlyflaring flange extending upwardly from one `of said feet, an inverted V-shape crimp projecting from the other of said feet and thence extending into a roofing-sheet to be joined to a companion-sheet, and an upper or lapping member having spreading or outwardly-sloping sides whose upper meetingpoint or apex verticallv alines with said gut-I tered apex-ligament'of the lapped-member and each of whose said sloping sides has a slanting or inclined S-shape crimp therein somewhat elevated above its lower edge and one or more longitudinal upright beads or' EDWIN R. PROBERT.

Witnesses:

JOHN ELLAS JONES, BERT RIeDoN. 

